Connecting 
  5.3 100 to 240 VAC power supply 
SCALANCE XR-500 
Operating Instructions, 05/2017, A5E03275845-11 
63 
 
M  Ground 
Pin assignment of the X3 plug on the rear 
Connector X3 is located on the back of the PS598-1. Connector X3 is intended only to 
connect the PS598-1 directly to SCALANCE XR-528-6M and SCALANCE XR552-12M. 
 
Figure 5-6  Position of the plug X3 on the PS598-1 power supply unit 
 
+24 VDC  
Ground 
One PS598-1 per device, no redundancy 
 
Figure 5-7  Connecting a power supply unit to a SCALANCE XR552-12M. SCALANCE XR528-6M is 
used analogously.